using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static int[][] NArr(long n) => Enumerable.Repeat(0, (int)n).Select(_ => NList).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var s = ReadLine();
        var sum = 0;
        var cnt = 0;
        for (var i = 0; i < s.Length; ++i) if (s[i] == '1')
        {
            sum += i;
            ++cnt;
        }
        if (cnt == 0)
        {
            WriteLine(1);
            return;
        }
        var dp = new long[sum + 1][];
        for (var i = 0; i < dp.Length; ++i) dp[i] = new long[s.Length];
        for (var i = 0; i <= sum && i < s.Length; ++i) dp[i][i] = 1;
        for (var i = 1; i < cnt; ++i)
        {
            var ndp = new long[sum + 1][];
            for (var j = 0; j < ndp.Length; ++j) ndp[j] = new long[s.Length];
            for (var j = sum - 1; j >= 0; --j) for (var k = s.Length - 1; k >= 0; --k)
            {
                if (dp[j][k] == 0) continue;
                for (var l = k + 1; l < s.Length && j + l <= sum; ++l)
                {
                    ndp[j + l][l] += dp[j][k];
                }
            }
            dp = ndp;
            // WriteLine(i);
            // WriteLine(string.Join("\n", dp.Select(di => string.Join(" ", di))));
        }
        var ans = 0L;
        for (var i = 0; i < s.Length; ++i) ans += dp[sum][i];
        WriteLine(ans);
    }
}